QuadLife is a cellular automaton. It is the same as the Game of Life, except that it has four ON states. When a new cell is born, then if the three cells that gave it birth all are of different states, the new cell's state is the one remaining ON state. Otherwise, the new state is the state that is the majority in the three cells. A cellular automaton (plural: cellular automata) is a discrete model studied in computability theory, mathematics, and theoretical biology. ... Gosper Glider Gun creating gliders. The Game of Life is a cellular automaton devised by the British mathematician John Horton Conway in 1970. ...